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Add PR_SET_PTRACER prctl call to fix pidfd_getfd permission error in ResultProcessor #142

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Add PR_SET_PTRACER prctl call to fix pidfd_getfd permission error in ResultProcessor #142

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4c26825
Initial plan
Copilot Oct 2, 2025
d3d8ac6
Add PR_SET_PTRACER prctl call to allow child process to access parent…
Copilot Oct 2, 2025
52926f9
Fix prctl call to use 5 parameters for consistency
Copilot Oct 2, 2025
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4 changes: 4 additions & 0 deletions src/ResultProcessor.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,10 @@ pid_t ResultProcessor::forkProcessResultProcessor(ResultProcessorSHMPointer_t SH
if (_ForkResult > 0) {
DBG(120, "Parent ResultProcessor Process PID:" << getpid());
DBG(120, "Parent ResultProcessor Atomic Address:" << StaticFSLock);

//- allow child process to ptrace parent (required for pidfd_getfd)
prctl(PR_SET_PTRACER, _ForkResult, 0, 0, 0);

return _ForkResult; // return child PID to parent
}

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